not receiving calls or texts

[Anonymous]

hi guys wondering if anyone can help the past couple of weeks my calls have not been coming through and sometimes it takes over 24hrs for texts to come through. my phone doesnt ring and it will go to voicemail or i will receive a message saying you missed a call from someone at sometime which isn't helpful as they come through hrs later. i have checked with o2 and they say there r no issues in my area even tho i know lots of people are having issue. i have done all i can think of on my iphone 6 plus reset,turn on and off, linked it to the computer reset the settings etc both sim and phone work prefectly checked that too. can anyone help or think of anything else to try

thanks 

[Anonymous]

Hi, I only got my S6 Edge on 22 June and that does the whole not letting some calls come through and not even registering that someone is calling until I get a voicemail message from them - I've replaced the SIM card already once because O2 said it was faulty - they also said there was no problem with my network - however I have been told it is because I leave it connected to the internet (not necessarily Wi-Fi though). It happened on my Nokia Lumia and my I-phone 5 that I had before that... so any ideas how to stop it?

[MI5]

I've commented on your other post.
I believe is simply a network error.